RB205T-40 Equivalent & Substitute Parts

Part Overview

The RB205T-40 is a Schottky diode array manufactured by Rohm Semiconductor, configured as a 1 Pair Common Cathode arrangement in a TO-220-3 Full Pack through-hole package. This component is rated for 40 V DC reverse voltage with 7.5 A average rectified current per diode and features fast recovery characteristics suitable for high-frequency switching applications. The part maintains Active product status with 2400 units in current inventory.

Substitute parts are identified to address application requirements including higher current ratings, alternative voltage specifications, or packaging variations while maintaining core electrical and mechanical compatibility within the Schottky diode array category.

Substiute Parts

RB205T-40

Rohm SemiconductorIn Stock: 2411RB205T-40 Datasheet

Current PartRFQ

RB205T-40NZC9

Rohm SemiconductorIn Stock: 1725RB205T-40NZC9 Datasheet

SimilarRFQ

RB205T-40

Rohm SemiconductorIn Stock: 2411RB205T-40 Datasheet

Parametric EquivalentRFQ

MBRF30L45CTG

onsemiIn Stock: 2473MBRF30L45CTG Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RB205T-40 are identified based on the following substitution criteria:

Primary Substitution Logic: Substitute parts must maintain the following core parameters to ensure functional compatibility:

• Diode Configuration: 1 Pair Common Cathode
• Technology: Schottky
• Mounting Type: Through Hole
• Package / Case: TO-220-3 Full Pack
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Allowable Parameter Variations:

• Voltage - DC Reverse (Vr) (Max): Equal to or greater than 40 V
• Current - Average Rectified (Io) (per Diode): Equal to or greater than 7.5 A
• Voltage - Forward (Vf) (Max): Within acceptable operating range for the application
• Current - Reverse Leakage @ Vr: Within acceptable limits for the application
• Operating Temperature - Junction: Equal to or greater than 150°C
• RoHS and REACH compliance maintained

Identified Substitute Parts:

1. RB205T-40NZC9 (Rohm Semiconductor): Higher current rating (15 A) with identical voltage specification (40 V), same configuration and package, Tube packaging variant
2. MBRF30L45CTG (onsemi): Higher voltage rating (45 V) and current rating (15 A), same configuration and package, Obsolete product status

Parameter Comparison

Engineering Selection Recommendations

RB205T-40NZC9 (Rohm Semiconductor)

This substitute part is functionally equivalent to the RB205T-40 with enhanced current capacity. The RB205T-40NZC9 maintains identical voltage specifications (40 V), configuration (1 Pair Common Cathode), and package format (TO-220-3 Full Pack). The increased current rating of 15 A per diode accommodates applications requiring higher current handling without modifying circuit design. Both parts are Active products with ROHS3 compliance and REACH Unaffected status. The RB205T-40NZC9 is supplied in Tube packaging, whereas the RB205T-40 packaging specification is not detailed. Current inventory for RB205T-40NZC9 is 1685 units.

MBRF30L45CTG (onsemi)

This substitute part provides higher voltage and current ratings (45 V, 15 A) compared to the RB205T-40 (40 V, 7.5 A). The MBRF30L45CTG maintains the same diode configuration, technology, and through-hole TO-220-3 Full Pack package format. The part exhibits lower forward voltage drop (500 mV @ 15 A) and extended operating temperature range (-55°C to 150°C). However, the MBRF30L45CTG carries Obsolete product status, indicating discontinued manufacturing and potential long-term supply constraints. Current inventory is 2395 units. ROHS3 compliance and REACH Unaffected status are maintained. The supplier device package designation differs (TO-220FP versus TO-220FN).

Selection Criteria:

For applications requiring sustained Active product availability and supply continuity, the RB205T-40NZC9 is the preferred substitute. For applications requiring higher voltage margin or extended temperature range with acceptance of Obsolete product status, the MBRF30L45CTG is applicable.

Frequently Asked Questions (FAQ)

Q: Can the RB205T-40NZC9 be used as a direct replacement for the RB205T-40?

A: Yes. The RB205T-40NZC9 maintains identical voltage rating (40 V), diode configuration (1 Pair Common Cathode), package format (TO-220-3 Full Pack), and mounting type (Through Hole). The increased current rating (15 A versus 7.5 A) provides additional capacity without requiring circuit modification. Both parts are Active products with ROHS3 compliance.

Q: What is the primary difference between the RB205T-40 and MBRF30L45CTG?

A: The MBRF30L45CTG provides higher voltage (45 V versus 40 V) and current (15 A versus 7.5 A) ratings. The MBRF30L45CTG also features lower forward voltage drop (500 mV @ 15 A versus 550 mV @ 7.5 A) and extended operating temperature range (-55°C to 150°C versus 150°C maximum). The MBRF30L45CTG carries Obsolete product status, whereas the RB205T-40 is Active.

Q: Are the TO-220FN and TO-220FP package designations interchangeable?

A: Both designations refer to TO-220-3 Full Pack through-hole packages. The suffix letters (FN versus FP) indicate supplier-specific package variants. Physical and electrical compatibility is maintained for circuit board mounting and thermal management applications. Verification of specific pin configuration and lead spacing is recommended for critical applications.

Q: What is the significance of the Obsolete product status for MBRF30L45CTG?

A: Obsolete status indicates the manufacturer has discontinued production. While current inventory of 2395 units is available, long-term supply cannot be guaranteed. For new designs or applications requiring sustained component availability, Active products such as RB205T-40 or RB205T-40NZC9 are preferred.

Q: Can the RB205T-40 be substituted with MBRF30L45CTG in a 40 V application?

A: Yes. The MBRF30L45CTG is rated for 45 V maximum reverse voltage, which exceeds the 40 V requirement. The higher voltage rating provides margin for transient overvoltage conditions. The increased current capacity (15 A) and lower forward voltage drop are additional benefits. Obsolete product status is the primary consideration for long-term supply planning.

Q: What are the key parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: (1) Diode Configuration (1 Pair Common Cathode), (2) Technology (Schottky), (3) Mounting Type (Through Hole), (4) Package Format (TO-220-3 Full Pack), and (5) Speed (Fast Recovery ≤ 500ns, > 200mA). Substitute parts must equal or exceed the voltage and current ratings of the original part. RoHS and REACH compliance must be maintained.

Q: Is the RB205T-40NZC9 available in different packaging formats?

A: The RB205T-40NZC9 is supplied in Tube packaging. The RB205T-40 packaging specification is not detailed in the provided data. For applications requiring specific packaging formats (Tube, Tape and Reel, or Bulk), packaging availability should be confirmed with the supplier.